Valve-grinding device



c. Rulzi- VALVE GRINDING DEVICE.

APPLICATION FILED JUNE 13. 192].

1 327 9 1 3' Patented Sept. 5, 1922..

Patented Sept. 5, 1922.

-' air VALVE-GRINDING DEVICE.

Application filed June 13, 1921.

To all whom it may concern Be it known that I, CHARLES RUIZ, a subjectof the King of Spain, and a resident of Belleville, in the county ofEssex and State of New Jersey, have invented certain new and usefulImprovements in Valve-Grinding Devices, of which the following is afull, clear, concise, and exact description, refer ence being had to theaccompanying drawings, forming a part of this specification.

This invention relates to valve grinding tools of the oscillatingprogressive type, designed to be manually operated by imparting anoscillating movement to the valve being ground and the arcs of rotationbeing of different circular length in each reversing stroke so as toimpart to the valve a rotating as well as an oscillating motion.

To this end, the invention consists of a novel construction andarrangement of parts hereafter described in detail and pointed out inthe appended claims, reference being bad to the accompanying drawings inwhich:

Fig. 1is a front view of the tool with half of the case removed.

Fig. 2is a vertical cross sectional view through line CD.

Fig. 3-is a fragmentary cross sectional view through the line AB.

Fig. 4-is a view of the sleeve.

Similar characters of reference refer to similar parts throughout theseveral views.

As illustrated in Figs. 1 and 2, the valve grinder comprises a specialbody integrally cast with a handle, and vertically split in two halvesfor the purpose of assembling the enclosed parts. Said casing isdesignated by numerals l and 2. v

Numeral 3 indicates the shaft on which is is mounted a suitable tool 4to fit the valve to be ground. In this particular design the tool isheld by means of a cotter pin 18.

Sleeve 5 is mounted on shaft 3 and is free to rotate on it. Two bevelgears 6 and 7 are Numeral 12 indicates a mutilated bevel gear,

said gear being mounted on shaft13 and Serial No. 477,318.

forming an integral part of it. Crank 14 and crank handle 15 are used asmeans for operating the tool.

In this particular design, the case is made in two halves, held togetherby means of rivets indicated by numeral 16 and the body of the tool ismade spherical and integrally cast with holder 17. r

In operation, upon turning crank handle 15 mutilated gear 12 is made torotate with it and thus the teeth in said gear alternatively engage withupper and lower bevel gears 6 and 7 which as it is apparent will in turnoscillate shaft 3 which is driven by means of pin 8.

The advancing is obtained as follows: In operation the valve beingground will create friction on the shaftand when the teeth in gear 12enter into engagement with gear 6 will move pin 8 to position shown indotted lines in Fig. 3, the angular motion of said pin in the hole beingequal to one or more teeth in gears 6 and '7. Then the last tooth ingear 12 disengages gear 6 the pressure on spring 10 is released and saidspring will bring sleeve backto'original position in re lation to pin 8and shaft? When gear 12 engages with gear *7 the shaft is driven bymeans of pin 8, but spring 10 does not operate and of course, the shaftis driven forward an amount equal to the number of teeth in mutilatedgear 12 while onthe engagement with gear 6, a motion equal to one ormore teeth was lost due to clearance in the hole 9 and the action ofspring 10.

It will be noticed from the foregoing that in order to advance theposition of the tool bit in each oscillation, a pressure greater thanthe spring must be applied on the shaft, although the shaft willoscillate under any condition.

Having thus described my invention what I claim as new is as follows:

In a valve grinder of the oscillating progressive type, the combinationof a case, a driven shaft journaled therein and having means forengaging a valve to be ground, and a laterally projecting pin, a sleeveloose on the shaft having a hole larger than and receiving the pin andtwo bevel gears of the same size, a spring fast to the sleeve andbearing against one side of the pin, a mu tilated bevel gear mounted inthe case to my hand in presence of two subscribing Witmesh with saidfirst mentioned gears 1aternesses. ally, and a hand crank for operatingsaid mutilated gear, whereby the shaft is osci1- 5 lated to a greaterextent in one direction Witnesses:

than in the other. MORRIS RESMIOK,

In testimony whereof I have hereunto set J. S. MUNIES.

CHAS. RUIZ.

